Brooklyn based Melville House Publishing has launched a new program, HybridBooks, that lets a customer scan a QR code printed on the back of a book to access supplemental material in digital format. Here’s a sample of the related content, which it calls “illuminations,” for the novella “THE DUEL by Giacomo Casanova.”

“For example, The Illumination for the HybridBook version of Anton Chekhov’s The Duel contains an essay on dueling by Thomas Paine, poems by Lord Byron, philosophy by Nietzsche, an anti-dueling church sermon, an argument in favor of dueling by a U.S. Senator, and the rules to the game of vint–a game that plays a role in the plot,” said Dennis Johnson, the publisher of Melville House, in a statement. “In the Illumination for Giacomo Casanova’s The Duel you’ll find a comic essay by Mark Twain on French dueling and an account of a famous duel fought from hot air balloons. And there’s so much more–maps, cartoons, recipes, photographs, paintings–to enhance the reader’s experience.”

The paper notes that Melville House is also offering a QR program to indie booksellers, where a customer can buy an ebook from within the store by scanning a QR code.